add proxy_env to cilium install task for proxy support (#12417)

roles/network_plugin/cilium/tasks/apply.yml

@@ -11,6 +11,7 @@
     cilium_action: "{{ 'install' if ('release: not found' in cilium_release_info.stderr | default('') or 'release: not found' in cilium_release_info.stdout | default('')) else 'upgrade' }}"
 
 - name: Cilium | Install
+  environment: "{{ proxy_env }}"
   command: "{{ bin_dir }}/cilium {{ cilium_action }} --version {{ cilium_version }} -f {{ kube_config_dir }}/cilium-values.yaml {{ cilium_install_extra_flags }}"
   when: inventory_hostname == groups['kube_control_plane'][0]